Measuring device
    11.
    发明授权

    公开(公告)号:US09671271B1

    公开(公告)日:2017-06-06

    申请号:US15293474

    申请日:2016-10-14

    发明人: John D. Alvey

    IPC分类号: G01F19/00

    CPC分类号: G01F19/002 G01F19/007

    摘要: The disclosure relates to a measuring device for a granulated product, including a top component comprising a leveling component and a clump-breaking component and a bottom component comprising a scoop and a handle. The measuring device allows a user to remove excess product from the scoop by moving the leveling component along the opening of the scoop. Further, the clump-breaking component serves to break the clump of product that forms in the scoop upon dispensing the product from the measuring device into a receptacle, which may contain a liquid. Breaking the clump of product improves the dissolution of the product into a liquid.

    Controlled, compact, on-demand ammonia gas generation process and apparatus

    公开(公告)号:US11339056B2

    公开(公告)日:2022-05-24

    申请号:US15856802

    申请日:2017-12-28

    申请人: Fuel Tech, Inc.

    摘要: Disclosed are methods and compact apparatus for controlled, on-demand ammonia generation from urea. The process gasifies an aqueous urea solution in a chamber utilizing hot gas while controlling the flows of aqueous urea solution and hot gas to achieve complete gasification of the aqueous urea solution and form a gas mixture comprising ammonia, isocyanic acid, carbon dioxide and water vapor, which is passed through a catalyst bed containing particulate transition metal oxide to convert substantially all of the isocyanic acid to ammonia. A catalyst support and the catalyst bed are aligned with the gasification chamber at the lower end of said chamber to provide a degree of back pressure on the gases in the gasification chamber to isolate the gasification chamber from turbulent exit effects caused by equipment downstream of the thermal reactor. A sample of the product stream is treated to remove water and ammonia, and analyze for carbon dioxide content to control the process. The apparatus to perform the process includes flow managing equipment and catalyst supports that facilitate continuous operation with accurate control.

    Recovery and use of wood acetylation fluid

    公开(公告)号:US10787412B2

    公开(公告)日:2020-09-29

    申请号:US15327043

    申请日:2015-07-17

    IPC分类号: C07C51/56 C07C51/44 B27K3/34

    摘要: Disclosed is the integration of the production of acetic anhydride from ketene, and the acetylation of wood using acetylation fluid comprising acetic acid and acetic anhydride. The invention involves recirculating acetylation fluid recovered from wood acetylation to a unit for the production of acetic anhydride from acetic acid and ketene. The acetic anhydride product stream can, in turn, be directly used as a wood acetylation fluid.